Which layover airport offers the lowest fares from Knoxville to Lisbon?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $760.

What airlines fly to Lisbon?

United Airlines, British Airways and American Airlines are the top three most popular airlines that fly to Lisbon from Knoxville according to our data. United Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Lisbon. Keep in mind that there are 4 different airlines that fly to Lisbon on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Flights connecting via Washington, D.C. (IAD) have the shortest average one-way travel time: 9h 55m.

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Washington, D.C. (IAD) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest connection time from Knoxville to Lisbon?

Washington, D.C. (IAD) has the shortest average layover time for this route: 1h 45m.

What is the cheapest airline that flies from Knoxville McGhee Tyson to Lisbon Humberto Delgado?

American Airlines and United Airlines are the most popular carriers operating from Knoxville McGhee Tyson to Lisbon Humberto Delgado

When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.

How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

As of June 2026, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$315 Cheap Flights from Knoxville to Lisbon in 2026

Q: What is the typical price of a round-trip flight between Knoxville and Lisbon?

Prices are currently low for flights on this route. Typical prices usually range from $1,054 to $1,460. The lowest price recently found on this route was $801.

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Knoxville to Lisbon

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:03 pm - 10:30 am

TYS

LIS

35h 27m

2 stops

11:25 am - 11:59 pm

LIS

TYS

41h 34m

2 stops

$801United Airlines

Sat, Oct 10 - Thu, Oct 22

3:45 pm - 8:20 am

TYS

LIS

35h 35m

2 stops

12:20 pm - 8:19 pm

LIS

TYS

12h 59m

1 stop

$821United Airlines

Sat, Oct 10 - Thu, Oct 22

7:25 pm - 8:20 am

TYS

LIS

31h 55m

2 stops

5:05 am - 11:59 pm

LIS

TYS

23h 54m

2 stops

$863United Airlines

Sat, Oct 10 - Thu, Oct 15

7:25 pm - 8:20 am

TYS

LIS

31h 55m

2 stops

12:20 pm - 11:59 pm

LIS

TYS

16h 39m

1 stop

$874United Airlines

Sat, Oct 10 - Thu, Oct 15

7:19 pm - 10:30 am

TYS

LIS

10h 11m

1 stop

1:00 pm - 11:59 pm

LIS

TYS

15h 59m

2 stops

$894Multiple Airlines

Sun, Aug 9 - Tue, Aug 25

1:35 pm - 10:30 am

TYS

LIS

15h 55m

1 stop

11:25 am - 8:24 pm

LIS

TYS

37h 59m

2 stops

$899United Airlines

Sun, Aug 9 - Tue, Aug 25

7:19 pm - 10:30 am

TYS

LIS

10h 11m

1 stop

12:20 pm - 11:59 pm

LIS

TYS

16h 39m

1 stop

$902Lufthansa

Sun, Aug 9 - Tue, Aug 25

5:45 am - 8:20 am

TYS

LIS

21h 35m

2 stops

11:25 am - 8:24 pm

LIS

TYS

37h 59m

2 stops

$903United Airlines

Sun, Aug 9 - Tue, Aug 25

7:20 pm - 8:20 am

TYS

LIS

32h 00m

2 stops

5:05 am - 9:00 pm

LIS

TYS

20h 55m

2 stops

$912United Airlines

Sat, Sep 19 - Wed, Sep 30

6:00 pm - 11:05 am

TYS

LIS

36h 05m

2 stops

5:05 am - 9:45 am

LIS

TYS

33h 40m

2 stops

$916United Airlines

Sat, Sep 19 - Wed, Sep 30

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British Airways flights from Knoxville to Lisbon

Our best British Airways deals on Knoxville to Lisbon flight tickets

British Airways

Oct 16

TYS6:21 amKnoxville McGhee Tyson

21h 44m

1 stop

LIS9:05 amLisbon Humberto Delgado

Oct 25

LIS11:05 amLisbon Humberto Delgado

27h 43m

1 stop

TYS10:48 amKnoxville McGhee Tyson

$927

British Airways

Oct 16

TYS1:23 pmKnoxville McGhee Tyson

21h 12m

2 stops

LIS3:35 pmLisbon Humberto Delgado

Oct 25

LIS11:05 amLisbon Humberto Delgado

27h 43m

1 stop

TYS10:48 amKnoxville McGhee Tyson

$958

British Airways

Sep 19

TYS4:46 pmKnoxville McGhee Tyson

11h 19m

1 stop

LIS9:05 amLisbon Humberto Delgado

Sep 30

LIS4:25 pmLisbon Humberto Delgado

32h 18m

2 stops

TYS7:43 pmKnoxville McGhee Tyson

$1,002

United Airlines flights from Knoxville to Lisbon

Our best United Airlines deals on Knoxville to Lisbon flight tickets

United Airlines

Oct 10

TYS6:03 pmKnoxville McGhee Tyson

35h 27m

2 stops

LIS10:30 amLisbon Humberto Delgado

Oct 22

LIS11:25 amLisbon Humberto Delgado

41h 34m

2 stops

TYS11:59 pmKnoxville McGhee Tyson

$801

United Airlines

Oct 10

TYS3:45 pmKnoxville McGhee Tyson

35h 35m

2 stops

LIS8:20 amLisbon Humberto Delgado

Oct 22

LIS12:20 pmLisbon Humberto Delgado

12h 59m

1 stop

TYS8:19 pmKnoxville McGhee Tyson

$821

United Airlines

Oct 10

TYS7:25 pmKnoxville McGhee Tyson

31h 55m

2 stops

LIS8:20 amLisbon Humberto Delgado

Oct 15

LIS5:05 amLisbon Humberto Delgado

23h 54m

2 stops

TYS11:59 pmKnoxville McGhee Tyson

$863

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 10/10

6:03 pm-10:30 am

2 stops35h 27m

Lisbon Humberto Delgado

Thu 10/22

11:25 am-11:59 pm

2 stops41h 34m

$801

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 10/10

3:45 pm-8:20 am

2 stops35h 35m

Lisbon Humberto Delgado

Thu 10/22

12:20 pm-8:19 pm

1 stop12h 59m

$821

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 10/10

7:25 pm-8:20 am

2 stops31h 55m

Lisbon Humberto Delgado

Thu 10/15

5:05 am-11:59 pm

2 stops23h 54m

$863

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 10/10

7:25 pm-8:20 am

2 stops31h 55m

Lisbon Humberto Delgado

Thu 10/15

12:20 pm-11:59 pm

1 stop16h 39m

$874

Quickest round-trip

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 8/9

7:19 pm-10:30 am

1 stop10h 11m

Lisbon Humberto Delgado

Tue 8/25

1:00 pm-11:59 pm

2 stops15h 59m

$894

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 8/9

1:35 pm-10:30 am

1 stop15h 55m

Lisbon Humberto Delgado

Tue 8/25

11:25 am-8:24 pm

2 stops37h 59m

$899

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 8/9

7:19 pm-10:30 am

1 stop10h 11m

Lisbon Humberto Delgado

Tue 8/25

12:20 pm-11:59 pm

1 stop16h 39m

$902

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sun 8/9

5:45 am-8:20 am

2 stops21h 35m

Lisbon Humberto Delgado

Tue 8/25

11:25 am-8:24 pm

2 stops37h 59m

$903

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 9/19

7:20 pm-8:20 am

2 stops32h 00m

Lisbon Humberto Delgado

Wed 9/30

5:05 am-9:00 pm

2 stops20h 55m

$912

KnoxvilleLisbon

TYS - LIS

TYSLIS

Knoxville McGhee Tyson

Sat 9/19

6:00 pm-11:05 am

2 stops36h 05m

Lisbon Humberto Delgado

Wed 9/30

5:05 am-9:45 am

2 stops33h 40m

$916

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Knoxville to Lisbon

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the typical price of a round-trip flight between Knoxville and Lisbon?

What is the cheapest month to fly to Lisbon?

In general, January is the cheapest month to fly from Knoxville to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $527. If you are unable to visit Lisbon during the month of January, then departing from Knoxville during the month October is also very affordable. Most momondo users find prices during this month for around $746.

Can stopping save me money on Knoxville to Lisbon flights?

You could potentially save up to 49% on your flight if you consider stops on a Knoxville to Lisbon flight.

When to book flights from Knoxville to Lisbon

Are you open to changing your travel dates? Check out the ideal times to fly from Knoxville to Lisbon according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Lisbon

Fastest flight time	9h 30m
Direct flights	None

The fastest flight from Knoxville to Lisbon takes 9h 30m

There are no direct flights from Knoxville to Lisbon. There are no popular flight routes from Knoxville to Lisbon.

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Frequently asked questions about flying from Knoxville to Lisbon

How far is Knoxville McGhee Tyson to Lisbon Humberto Delgado by plane?
Lisbon Humberto Delgado is 3990.0 mi away from Knoxville McGhee Tyson. 9h 30m is a normal flight duration for this route.
When did momondo last update prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
Prices for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport are updated daily.
How many operators does momondo search for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
As of June 2026, there are 2 operators available to choose from for flights from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
How old do you have to be to fly from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Knoxville McGhee Tyson Airport to Lisbon Humberto Delgado Airport.
What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?
The required travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Lisbon Humberto Delgado Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular airline from Knoxville to Lisbon?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Knoxville to Lisbon is United Airlines (59% of total bookings). The next most popular airline is British Airways (41%).

Best airlines flying from Knoxville to Lisbon

Compare and see reviews for airlines that fly from Knoxville to Lisbon with momondo

Airline	Rating	Free Cancellation	Price
British Airways	PriceFrom $475	Free Cancellation	Rating 6.7 8,076 reviews		Search British Airways flights
United Airlines	PriceFrom $633	Free Cancellation	Rating 7.4 9,901 reviews		Search United Airlines flights

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Costa da Caparica

Tomar

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Can I find flights from Knoxville to Lisbon with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Knoxville to Lisbon flights to just show those with flexible booking policies.

How can momondo help me find flights from Knoxville to Lisbon?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Lisbon from Knoxville.

I’m not ready to book a flight from Knoxville to Lisbon right now. Can momondo alert me if prices change?

Price alerts on flights to Lisbon from Knoxville are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Cheap flights from Knoxville to Lisbon from $315

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Knoxville to Lisbon departing on 10/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Knoxville to Lisbon

What is the typical price of a round-trip flight between Knoxville and Lisbon?

What is the cheapest month to fly to Lisbon?

Can stopping save me money on Knoxville to Lisbon flights?

What is the cheapest airline that flies from Knoxville McGhee Tyson to Lisbon Humberto Delgado?

What airlines fly to Lisbon?

Which airport is the most popular layover for flights between Knoxville and Lisbon?

Which layover airport offers the lowest fares from Knoxville to Lisbon?

Which layover airport has the shortest travel time from Knoxville to Lisbon?

Which layover airport has the shortest connection time from Knoxville to Lisbon?

When to book flights from Knoxville to Lisbon

Cheap Knoxville to Lisbon (TYS to LIS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Knoxville to Lisbon

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Frequently asked questions about flying from Knoxville to Lisbon

Best airlines flying from Knoxville to Lisbon

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An easier way to manage your Lisbon trip

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